关于铁路桥梁的刚度问题

On the Stiffness Problems of Rail way Bridges

基于前人和笔者研究结果,文中阐明了铁路桥梁刚度的物理意义,综述了各国(桥规)对铁路桥梁的竖向刚度及横向刚度的规定。介绍了有关规定的来源,简要讨论了有关规定的疑难点。最后提出了日本对刚度的严格规定有可能放宽及放宽道路。

On the basis of the achievements made by the predecessor's and author himself,the physical significance of railway bridge stiffness is expounded and the norms made by many other countries in respect to vertical and lateral stiffness of railway bridges are also summarized.The source of some norms and a few questionable points are briefly introduced and discussed.Finally,it is pointed out that in the relaxation of the Japanese rigorous restrietions about the railway bridge stiffness are possible,and the paths of relaxation are proposed.